In the context of the use of mediation in labor relations, what are the characteristics of dealmakers?

A. They concentrate on the bargaining issues and attempt to pressurize the negotiators to make concessions.
B. They take direct efforts to shape the final result by getting the negotiators to change their views and strike a deal.
C. They believe that if they improve the climate and structure of negotiations, the parties will be able to resolve their differences.
D. They concentrate on facilitating improved dialogue between the representatives of labor and management.